DE69939674D1 - Geometric transcoding of a digital signal - Google Patents

Geometric transcoding of a digital signal

Info

Publication number
DE69939674D1
DE69939674D1 DE69939674T DE69939674T DE69939674D1 DE 69939674 D1 DE69939674 D1 DE 69939674D1 DE 69939674 T DE69939674 T DE 69939674T DE 69939674 T DE69939674 T DE 69939674T DE 69939674 D1 DE69939674 D1 DE 69939674D1
Authority
DE
Germany
Prior art keywords
digital signal
geometric
symbols
transcoding
bands
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69939674T
Other languages
German (de)
Inventor
Bertrand Berthelot
Felix Henry
Eric Majani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR9810734A external-priority patent/FR2782860A1/en
Application filed by Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of DE69939674D1 publication Critical patent/DE69939674D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/40—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/48—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using compressed domain processing techniques other than decoding, e.g. modification of transform coefficients, variable length coding [VLC] data or run-length data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/63—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals

Abstract

A method for the geometric transcoding of a compressed data file (F) containing a digital signal of dimension N coded by means of a coding method including at least one step of spectral breakdown into frequency sub-bands of the digital signal (S) includes the following steps: extracting (E9) symbols associated with the coefficients of the frequency sub-bands of the digital signal; applying (E10) a geometric transformation to said symbols; updating (E12, E13) N indicator or indicators representing a normal or reversed order of the symbols respectively in N direction or directions of the digital signal and reconstituting (E18) the digital signal coded by reversal of the extraction step (E9). <IMAGE>
DE69939674T 1998-08-26 1999-08-03 Geometric transcoding of a digital signal Expired - Lifetime DE69939674D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9810734A FR2782860A1 (en) 1998-08-26 1998-08-26 Geometric transcoding of a digital signal such as a compressed data file on the basis of a spectral breakdown without completely decompressing the signal
FR9815212A FR2782861A1 (en) 1998-08-26 1998-12-02 GEOMETRIC TRANSCODING OF A DIGITAL SIGNAL

Publications (1)

Publication Number Publication Date
DE69939674D1 true DE69939674D1 (en) 2008-11-20

Family

ID=26234511

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69939674T Expired - Lifetime DE69939674D1 (en) 1998-08-26 1999-08-03 Geometric transcoding of a digital signal

Country Status (6)

Country Link
US (1) US6778608B1 (en)
EP (1) EP0982931B1 (en)
JP (1) JP4289732B2 (en)
AT (1) ATE410886T1 (en)
DE (1) DE69939674D1 (en)
FR (1) FR2782861A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2795206B1 (en) 1999-06-17 2001-08-31 Canon Kk METHOD FOR MODIFYING THE GEOMETRICAL ORIENTATION OF AN IMAGE
US7580578B1 (en) 2003-02-03 2009-08-25 Canon Kabushiki Kaisha Method and device for forming a compressed transcoded digital image signal
FR2850825B1 (en) * 2003-02-03 2005-07-01 Canon Kk METHOD AND DEVICE FOR FORMING COMPRESSED TRANSCODE IMAGE DIGITAL SIGNAL
FR2889382A1 (en) * 2005-07-29 2007-02-02 Canon Res Ct France Soc Par Ac Multidimensional digital signal e.g. digital image, filtering method for e.g. coding device, involves obtaining filtering value of filtered sample in selecting one value among simulated filtering values of sample based on preset criterion
JP5017555B2 (en) * 2006-04-10 2012-09-05 株式会社メガチップス Image encoding apparatus and image decoding apparatus
CN101421758B (en) * 2006-04-18 2011-09-21 国立大学法人东京工业大学 Image converter and image converting program
FR2906093A1 (en) * 2006-09-18 2008-03-21 Canon Kk METHODS AND DEVICES FOR ENCODING AND DECODING, TELECOMMUNICATION SYSTEM AND COMPUTER PROGRAM USING THE SAME
US8588539B2 (en) * 2008-02-20 2013-11-19 Canon Kabushiki Kaisha Methods and devices for filtering and coding a digital signal
DE602009000212D1 (en) * 2008-03-26 2010-11-04 Mazda Motor Vehicle suspension subframe structure
EP2299716B1 (en) 2009-09-09 2016-11-23 Canon Kabushiki Kaisha Method and device for coding a multidimensional digital signal
JP5191013B2 (en) * 2011-03-10 2013-04-24 株式会社メガチップス Image encoding apparatus and image decoding apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3670754B2 (en) * 1996-04-15 2005-07-13 オリンパス株式会社 Signal processing device
US5751865A (en) 1996-09-26 1998-05-12 Xerox Corporation Method and apparatus for image rotation with reduced memory using JPEG compression
EP0899960A3 (en) * 1997-08-29 1999-06-09 Canon Kabushiki Kaisha Digital signal coding and decoding
CA2219809A1 (en) * 1997-10-31 1999-04-30 Shen-En Qian System for interactive visualization and analysis of imaging spectrometry datasets over a wide-area network
AUPP091197A0 (en) * 1997-12-15 1998-01-08 Liguori, Vincenzo Direct manipulation of compressed geometry
US6298166B1 (en) * 1998-03-30 2001-10-02 Seiko Epson Corporation Image transformations in the compressed domain

Also Published As

Publication number Publication date
JP2000078019A (en) 2000-03-14
EP0982931A1 (en) 2000-03-01
US6778608B1 (en) 2004-08-17
FR2782861A1 (en) 2000-03-03
ATE410886T1 (en) 2008-10-15
EP0982931B1 (en) 2008-10-08
JP4289732B2 (en) 2009-07-01

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